Automatically-threading shuttle.



J. SMITH.

AUTOMATICALLY THBEADING SHUTTLE.

APPLICATION FILED 3.5, 1913.

Patented Oct. 7, 1913.

2 SHEETSSHEET 1.

INVENTOR Jhib 6 2228% IM/3 m J. SMITH.

AUTOMATICALLY THEEADING SHUTTLE.

APPLICATION FILED APB..5, 1913.

1,074,656. Patented 001;. 7, 1913. I 2 SHEETS-SHEET 2.

"01, IMIILIIHIILR I 6' WITNESSES JNVENTOR Y W Allor ey untrue strarnsrgrnntr orrros.

JOHN SMITH, OF HOPEDALE, MASSACHUSETTS, ASSIGNOR T DRAPER COMPANY, CF HOPEDALE, MASSACHUSETTS, A GORFORATIQN OIF= MAINE.

' AUTOMATICALLBTHREADINGSHUTTLE.

Specification-of Lettere-Batent.

Patented Oct. 7,1913.

Application filed'April 1913. Serial No; 759,027.

To (IN 1071 0m it may concern:

Be it known that I, onx SMITH, of Hopedale, in the county of Worcester'and State of ll'lassachusetts, have invented a new and useful: Improvement .inlAutomatically- T hreading Shuttles, of which thefollowing is a specification. I

The present inventionis an improvementupon the automatically threading shuttle set forth in United States Letters, Patent of Stimpson, No. 933,497, September 7,1909;

and the object of the improvement iszto still further insure thc maintenance of the thrcad in proper position after theshuttle has been automatically threaded.

The present improvement is illustrated in the accompanying drawings wherein,

Figure 1 is a. plan view of the eye end of the shuttle containing the present i-rnprovenient. Fig. 2 is a horizontal sect-ion thereof in the plane indicated by the line 22 in Fig. 3. Fig. 3 isa sidevi'ew. Fig. 4 is a cross section in the plane indicatedby the line H in Fig. 1. Fig. 5 is a side view of the threading -ldevice detached from the shuttle, parts being. broken away to show the construction.

ent additionto .the shuttle. Fig. 7 is a perspective-view of the slotted lining of the shuttle eye.-

Except for the structure which is illus-- trated in the detachedFign- 6 and elsewhere;

in the drawings'theremainder of the ill'u'sQ.

trated shuttle issimilarto what shown in the said Stimpson Patent No. 933397. As, in that patent, A is'the Shuttle having the bobbin chamber B and a slotted thread eye CL A sheet metal automatic threader iscmployed which is bent into proper. shape to" constitute the front side wall D, the rear side Wall E. and the bottom F of alongitu dinal thread passage through which the thread passes on its way from. the bobbin chamber. B to the slotted eye C.- As in said patent, this threading device has a laterally and rearwardly extending beak Gnnder which the thread passes on its way to the slotted eye and there is a forwardly extending overhanging, guard H above the beak' at the outer end of the thread passage and alaterally and rearwardly pro1ect1ng guard I at the entrance to the thread passage be-' tween the walls D and E for the purpose of.

Fig. 6 is a perspective view of the structure which constitutes the pres maintaining the thread inplace. At the thread entrance the bottom F of the t-hreader is bent upwardly and outwardly to form a shoulderJ :to aid in retaining a tension or frictionpad N in place in contact with which. the thread runs. The threader is maintained in place in theshuttle by a transverse bolt K. The eye of the shuttle has a slotted metalliclining L. In all of these respects the illustrated :shuttle is Similar to that of said Stimpson Patent No, 933,497. As shown int-hat patent there is a long uncovered space within the threader. between theitwo guards H and I, and it sometimes happens. that a looipfforms in the thread within this space due probably to the shock incident to the abrupt stoppage of the shutltle in its flights and this sometimes results in thereof. This block M has a. transverse aperture a, through which the bolt K passes thus holding the block securely in place. This block is formed with a thread retainer Z) which overhangs a thread groove 0 whose axis isin line with the longitudinal thread passage within the thrcader. The thread retainer-b extends from the front wall of the thread passage rearwardly and downwardly toward the rear'wall E of the threader stopping short of said rear wall so as to leave" just room for the downward passage of the thread. The downturned edge of the re-- tainer b.approaches close to the body of the block .M leaving-a narrow slot 7 for the entranc'e .of the thread into the ,QTOOVQ c. The bottom of the groove c is below the bottom of the slot. 7, and below the upper portion of the shuttle eye. The upper surface of the retainer?) is-downwardly inclined so as to direct the thread tothe thread slot 1 The thread groove 0 communicates-=with the thread eye C through a notch (l in the wall of the blocklll and this notch 61, has a downrdly extending thread directing surface 6 at the forward face of the block which facilit-ates the passage of the thread into the eye C.

The rear end f of the block M is downwardly and outwardly inclined so as to form with the upwardly and outwardly inclined shoulder J of the threader a chamber for the tension pad N which is wider at the bottom than at the top thus securely retaining the pad N in place.

I claim 1. An automatically threading shuttle having, in combination, a slotted thread eye; a sheet metal threader having a longitudinal thread passage communicating at its outer end with said eye, a laterally extending beak partly crossing said thread passage, and laterally extending thread guards at opposite ends of said passage; and a thread block located within and at the bottom of said passage, said block having (a) a longitudinal thread groove open at both ends with its outer end opposite the shuttle eye and its bottom below the upper portion of the shuttle eye, (6) a thread retainer on its front side extending downwardly and rearwardly toward the rear wall of the thread passage but stoppin 'short thereof to leave a narrow threat for the thread, said retainer being located between the thread guards, (c) a narrow slot below the bottom edge of said retainer and communicating with said thread groove, and (d) an inwardly extending notch on its front side opposite the shut tle eye through which the thread extends from the. thread groove to the shuttle eye, said notch having a downwardly and outwardly extending thread directing surface.

2. An automatically threading shuttle having, in combination, a slotted thread eye; a sheet metal threader having a longitudinal thread passage communicating at its outer end with said eye, a laterally-extending beak partly crossing said thread passage, and laterally extending thread guards at opposite ends of said passage; and a thread block located within and at the bottom of said passage, said block having a longitudinal thread groove open at both ends with its outer end opposite the shuttle eye and its bottom below the upper portion of the shuttle eye, a

thread retainer on its front side extending downwardly and rearwardly toward the rear wall of the thread passage but stopping short thereof to leave a narrow throat for the thread, said retainer being located between the thread guards, and a narrow slot below the bottom edge of said retainer and communicating with said thread groove.

3. An automatically threading shuttle having, in combination, a slotted thread eye; a threader having a longitudinal thread passage communicating at its outer end with said eye, a laterally extending beak partly crossing said thread passage, and laterally extending thread guards at opposite ends of said passage; a thread retainer extending from the front wall of the thread passage downwardly and rearwardly toward the rear wall of the thread passage, but stopping short thereof to leave a narrow throat for the thread, said retainerbeing between the thread guards; a thread groove below the retainer; a narrow slot below the bottom edge of said retainer and communicating with said thread groove; and an 1nwardly extending notch at the front side of said groove and opposite the shuttle eye through which the thread extends from the thread groove to the shuttle eye.

4. An automatically threading shuttle having, in combination, a slotted thread eye; a threader having a longitudinal thread passage communicating at its outer end with said eye, a rearwardly and laterally extending beak partly crossing said threadpas sage, and laterally extending thread guards at opposite ends of said passage; and a thread retainer extending partly across the thread passage but leaving a narrow throat for the thread, said retainer being between the beak and the inner thread guard at the entrance to the thread passage.

5. An automatically threading shuttle having, in combination, a slotted thread eye; a sheet metal threader havinga longitudinal thread passage communicatmg at its outer end with said eye, and an upturned outwardly inclined shoulder at the entrance to said passage; a block at the'bottomof said passage having at its inner end an outwardly and downwardly inclined face; a tension pad between said shoulder and the inner end of said block; and a transverse bolt in the shuttle passing through said threader and said block.

6. An automatically threading shuttle having, in combination, a slotted thread eye; a threader having a longitudinal thread passage communicating at its outer end with said eye, and an upwardly extending and outwardly inclined shoulder at the entrance to said passage; a block at the bottom of said passage having at its inner end an outwardly and downwardly inclined face; and a tension pad between said shoulder and the inner end of said block.

In witness whereof, I have hereunto signed my name in the presence of twosubscribing witnesses.

JOHN SMITH.

Witnesses 4 CLIFTON TYLER, DANA Osoooo, 

